Rework navigation so we can resolve by key now

2024-11-17 23:09:26 +00:00
parent 796ef41e3f
commit 7a9028bbeb
26 changed files with 371 additions and 88 deletions
@@ -0,0 +1,58 @@
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Toolkit.Foundation;
+
+namespace Toolkit.WinUI;
+
+public class ContentControlHandler :
+    IHandler<NavigateTemplateEventArgs>
+{
+    public void Handle(NavigateTemplateEventArgs args)
+    {
+        if (args.Region is ContentControl contentControl)
+        {
+            if (args.Template is Control control)
+            {
+                TaskCompletionSource taskCompletionSource = new();
+                void HandleLoaded(object? sender, RoutedEventArgs args)
+                {
+                    control.Loaded -= HandleLoaded;
+                    if (control.DataContext is object content)
+                    {
+                        if (content is IActivation activation)
+                        {
+                            activation.IsActive = true;
+                        }
+                    }
+
+                    taskCompletionSource.SetResult();
+                }
+
+                void HandleUnloaded(object? sender, RoutedEventArgs args)
+                {
+                    control.Unloaded -= HandleLoaded;
+                    if (control.DataContext is object content)
+                    {
+                        if (content is IActivation activation)
+                        {
+                            activation.IsActive = false;
+                        }
+
+                        if (content is IDisposable disposable)
+                        {
+                            disposable.Dispose();
+                        }
+                    }
+                }
+
+                control.Loaded += HandleLoaded;
+                control.Unloaded += HandleUnloaded;
+
+                control.DataContext = args.Content;
+
+                contentControl.Content = null;
+                contentControl.Content = control;
+            }
+        }
+    }
+}